1 answer

if you are using cinder backend other than lvm make sure you have entry into cinder.conf
use grep enabled_backend /etc/cinder/cinder.conf and if you have other backend like rbd then make an entry after lvm,rbd and also check if you have mentioned correct volume driver information into cinder.conf file
grep volume_driver driver /etc/cinder/cinder.conf
Restart all cinder related service again.